Blue-to-black disperse dye composition and dye product

The invention discloses a blue-to-black disperse dye composition and a dye product. The blue-to-black disperse dye composition comprises a component A, a component B, a component C and a component D. The component A is selected from at least one of compounds shown in a formula (I), the component B is selected from at least one of compounds shown in a formula (II), the component C is selected from at least one of compounds shown in a formula (III), and the component D is selected from at least one of compounds shown in a formula (III). The component D is selected from at least one of compounds shown in a formula (IV). The invention also provides a blue-to-black disperse dye product, which comprises the blue-to-black disperse dye composition and an auxiliary agent. When the disperse dye provided by the invention is applied to dyeing of hydrophobic fiber materials, various color fastnesses are excellent, and the problems of discoloration, staining and the like of dyed fabrics in clear water and washed clothes after various polyester fabrics are dyed by the disperse dye can be effectively solved.